OVULARIA BULBIGERA. 
27 
makes no reference to the spots), but the 11 thickened black base ” 
which he mentions, and from which the name “ bulbigerum ” is 
derived, is entirely wanting. The hyphas are no thicker at the 
base than elsewhere. But many of the tufts do spring from a 
little brownish pustule or tubercule of the leaf, which is apparently 
the beginning of the perithecium, and presumably that of Sphcerella 
pseudomaculceformis , Awd., which Fuckel himself records as appear- 
ing on the same leaves somewhat later in the year, and to which he 
assigns the Ovularia as conidial form. Can this tubercle, or 
fragments of it, be what Fuckel alludes to in the words “ e basi 
incrassato nigro ortis” although certainly neither his specific name 
nor his description would naturally lead one to that conclusion ? 
The question must be settled by someone who has access to the 
original specimens. 
W. B. Grove, B.A. 
REVISION OF POLYSACCUM. 
By G. Massee. 
Polysaccum, Desp. D. C. ; Rapp. Voy , ii., p. 80 ; Fries Syst. Myc ., 
hi., p. 51. 
Peridium simple, rigid, dehiscing irregularly, filled with numerous 
small cavities, with rigid walls (peridiola), and containing, the 
spores. 
In this genus thevegetative portion of the capillitium is com- 
pacted together to form the rigid walls of the peridiola, into which 
the fertile threads project and bear the spores; hence only a few 
shrivelled threads are found mixed with the spores. In Scleroderma 
there is also a tendency to form peridiola, but the walls are not 
rigidor well defined. Bippoperdon also has a honeycombed capil- 
litium, which, however, remains soft and elastic. 
P. pisocarpium, Fr. S. M., hi., p. 54. 
Peridium subglobose, passing downwards into a short stem- 
like base. Peridiola large, irregular, angular, 4-5 X 2-3 mm., 
yellow ; spores spherical, warted, coffee-colour, 9-13 p. Krombh., 
Heft. 8, p. 20; taf. lx., f. 9, 10. Deitr ., Deutsch. FI. (Schwamme), 
pi. 118. Winter, Krypt. FI., p. 890. P. acaule, D. C ., Rapp, 
de Voy. ii., p. 80; FI. Fr. vi., p. 103. P. arenarium , Corda , 
Ic. Fung. tom. ii., p. 24, 25; tab. xii., f. 91. P. olivaceum, 
Fr. S. M. iii., 54. P. capsuliferum , Seer. Myc. Suisse, iii., 
p. 373. Pisolithus arenarius , Alb. et Schiv., Conspect. Fung., p. 
82; tab. i., f. 3. Pisocarpium arenarium, Nees. Syst. i., p. 27. 
Lycoperdon capsuliferum, Sow., Eng. Fung., pi. 425. Pxsicc., Rav. 
Fung. Amer., 470. Roumeg., Fung. Gall., 1311. Welw., Crypt. 
Lusitana, 60. 
